Drop leaf extension table



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3 Sheets-Sheet 2 Filed Oct. 17, 1938 INVENTOR. M151: [AM/1f [ix 141m BYZ Z ATTORNEYS n 16, 1 4. w. HYLAIN DROP LEAF EXTENSION TABLE Filed 0013.17, 1938 3 Sheets-Sheet A'ITORNEY.

Patented Jan. 16, 1940 UNITED STATES} PATENT orrics 12 Claims.

My invention relates to improvements in a drop leaf extension table, andit consists of the combinations, constructions and arrangementshereinafter described and claimed.

An object of my invention is to provide a drop leaf extension table inwhich an elongated platform is supported by a base and carries aturntable that is adapted to be swung through an arc of 90. Two groupsof extension slides 10. are secured to the turntable and are adapted tobe keyed to the platform when the table top is opened or closed. Thiskeying of the slides to the platform prevents rotation of the turntable,slides andtable top with respect to the platform 1.5 when the table topis extended or closed and and. gears that control the opening andclosing movement so that a movement of one side of the table into openor closed position will automatically move the other side. This permitsone person to open or close the table and the top sections will alwaysbe balanced on the platform and base.

The extension mechanism .supports only the extensible ends of the tabletop and it is there- 5 fore possible toswing the drop leaves intoinoperative position if desired, when the table top is extended. Theslides extend transversely to the platform when the table is closed andparallel to the length of the platform when the table is swung into-aposition ready for opening.

Other objects and advantages will appear in the following specification,and thenovel features of the device will be particularly pointed out inthe appended claims. My invention is illustrated in the accompanyingdrawings forming-a part of this application, in which t Figure 1 is anend elevation of the table shown in closed position;

. Figure 2 is a top plan view of Figure 1;

Figure 3 shows the table top swung through an angle of and partiallyopened;

Figure 4 is a bottom plan view of Figure 3 showing the top fullyextended; Figure 5 is a viewsimilar to Figure 4, but

other suitable fastening means.

showing the top closed and the platform omitted;

Figure 6 is asection along the line 6 -6 of Figure 5; l

Figure '7 is a perspective view of the table 5 extended; and Figure 8 isan isometric view of the platform.

In carrying out my invention, I provide a table with an elongatedplatform l supported by a pedestal or leg base 2. The platform may be 10made of any material desired, preferably wood, and Figure 4 shows theplatform as being elongated and provided with curved ends 3. I do notwish to be confined to the particular type of supporting legs shown at2, in Figure 1, since 15.

any type of support for the platform may be used. The platform has acircular recess 4.. formed therein and a turn table 5 is rotatablymounted in the recess. Figure 6 shows a screw 6 forrotatably connectingthe turn table with 20 the platform. A sleeve I receives the screw shankand the head of the screw is tightened down against the end of thesleeve. The sleeve is of a length that will permit the free rotation ofthe turn table 5 in the recess 4 even though 25 the screw is tightenedin place.

In Figures 3 and 4, I show an arcuate slot 8 formed in the bottom of therecess 4 and extending through an arc of 90. A pin 9 is carried by theturn table 5 and is slidably received 39 in the are. When the table isin closed posi tion, the pin 9 will be at the end of the are shown inFigure 2 Before the table can be completely opened, the table top mustbe partially opened and then rotated in a clockwise direction until thepin 9 abuts the other end of the slot as shown in Figure 3. This will bedescribed in detail hereinafter.

The upper surface of the turn table lies flush with the upper surface ofthe platform for a purpose now to be described. A plurality of extensionslides are arranged in two groups and are carried by the turn table andthe center slides l0 and H1 in each group are rigidly connected to theturn table top by screws II or Slides l2 and I3 in one group are mountedon each side of the slide I0 and are slidably keyed thereto by dovetailslots and keys in the manner shown in Figure 6. Slides l2 and I3 of theother group 50 are in like manner slidably keyed to the slide Ill. InFigure 3, I show the slides 10 and I0 carrying gears l4 and M and thesegears mesh with racks carried by the adjacent slides. The slides 12 andI3 carry racks l5 and I6 that mesh with the gear i l and the slides l2and i3 carry racks l5 and E6 that mesh with the gear The slides i2 andit have extension slides l7 and i8 slidably keyed thereto and theextension slides in turn carry end slides 59 and. 20 which are slidablykeyed thereto. I'he same is true with the extension slides I? and i8 andend slides l9 and 20'. In Figure 4, I show the underside of the slidesand illustrate how the slides iii and El are connected to the slide itby a gear 2i carried by the underside of the slide l2 and meshing withracks 22 and 23 carried by the undersides of the slides iii and llrespectively. In like manner, I show how the slides iii and it areconnected together by a gear 2 5 that is carried by the slide 53 andthis gear meshes with racks 25 and 25 carried by the undersides of theslides if! and i8 respectively. Referring again to Figure 3, it will benoted that the slides i2 and iii are operatively connected together by agear 2i carried by the slide El and meshing with racks 28 and 29 carriedby the uppersides of the slides l2 and i9 respectively. The slides 13and 2b are likewise connected together by a gear t ll carried by theuppersides of the slide "3 and meshing with racks 3! and 32, carried bythe uppersides of the slides 83 and 29 respectively. Correspondingreference numerals are given to the other group of gears and racks andthese reference numerals are primed in order to distinguish between thetwo groups.

The end slides l9, l9, 2% and 2t carry table top sections 33 and 34.When the table top is closed, the sections 33 and 34 abut each other andpins 35, see Figure 2, carried by the section 3 enter recesses in thesection 33. Drop leaves 36 and 3? are hinged at 38 and 39, see Figure 1,to the sections 33 and 3d. When the table is closed, the leaves 88 and3? may extend downwardly as shown in Figure 1. An apron is carried bythe sections 33 and 3 3 and encloses the slide mechanism. This apron iscomposed of two U- shaped parts MI and Mia and these parts are spacedfrom each other when the table top is extended. The apron part 4%carries arms M that are swingable about vertical axes and when swunginto the extended position shown in Figure 3, will support the drop leaf36 in a horizontal position. In like manner, the apron part Mia carriesarms 62 that swing about vertical axes and these arms support the dropleaf 3'! in a horizontal position. The table top sections 33 and M maybe secured together by hooks 43 or any other suitable fastening means,see Figure 2.

I provide novel means for locking the table top against rotation whenthe top is in closed position and also for locking it against rotationwhen in open position. The slides 42 and [3 are provided with dove-tailkeys A l and 35 on their under surfaces and these keys are receivable inkeyways 46 and d! in the upper surface of the turn table 5. When theturn table is in the position for permitting the table top to beextended. the keyway 46 aligns with a keyway as in the platform I andthe keyway 4'! aligns with a keyway 69. The movement of the slides asthe table top is extended will cause the keys M, and 45 to enter thekeyways E8 and 49 and in this way the slides will be anchored to theplatform and will prevent relative rotation between the table top andthe platform. The other group of slides are provided with keys andkeyways and corresponding reference numerals are applied and primed soas to distinguish from the first group.

In Figure 5, I show the keys 45 and 45 extending beyond the turn table 5when the table top sections 33 and 3d are moved into abutting relation.In Figure 3, I show recesses 50 and 58 for receiving the projectingportions of the keys 15 and 65 when the table top sections are fullyclosed. This will prevent the rotation of the table top with respect tothe platform when the table is closed. The keys 5 and ii are so arrangedthat they will permit the table top sectionsto be only partially openedbefore they will abut the periphery of the recess This initial openingmovement, however, is sufficient to remove the keys from the lockingrecesses. The other ends of the keys G5 and 25 when striking theperipheral wall of the recess l will prevent further opening of thetable top sections until the turn-table is swung through an arc of Thisrotation will bring the keys A5 and t5 into registration with thekeyways it and 49, whereupon the table top may be opened to the desiredextent, the keys sliding in the keyways, thereby interlocking'theturntable 5 and the extensible slides to the platform i.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood.

The table when closed as shown in Figure 1, will occupy very littlespace. All of the slides will be concealed by the top sections 33 and 3dand the apron parts MI and Mia, and therefore the table resembles asmall drop leaf table in appearance. The table top may be doubled insize when the drop leaves 35 and 3'! are raised into a horizontalposition and supported by the arms 4! and 42. If itis desired, toenlarge the table top still further, the hooks 43 are released and thenthe table top is partially opened by moving the sections 1-33 and 34slightly apart. This movement will free the keys .5 and 45 from therecesses 5i! and Eli in the manner already set forth and then the tabletop may be swung through an arc of 90 and will turn the slides and theturn table therewith. When the slides are parallel with the longitudinalaxis of the platform I, they may be extended and their keys will bereceived in the keyways .8, 48', as and 49'. Additional leaves 5! maynow be placed between the table top sections 33 and 3d and will restupon the slides. Each leaf may carry projections in one edge receivablein recesses in the adjacentleaf edge in the customary manner, none beingshown. The table top cannot be rotated when extended. The slides extendonly to a point where they will support the sections 33 and 34 andtherefore they will not interfere with the raising and lowering of thedrop leaves, regardless of whether the table is closed or extended. Ifdesired; drawer compartments 52 may be placed at the ends of the tablesections (it and. 34, see Figure 2. The drawer compartments are carriedby the apron M) and Mia and are disposed above the platform I. Napkinsand silverware may be placed in the drawers, if desired. It will, benoted from Figure 4 that the keys M and 45 are broken away to receivethe gears 2! and M. The dovetail shape of the keys not only looks thetable top against rotation. but anchors the ton to the platform so thatthe table may be lifted and moved by raising the top without the entireload being carried by the central screw. The greater length of theplatform will parallel the greater length of the table top when openedand this will provide an additional support for the table top 75 whenfully extended. In addition, the gears and racks equalize the openingand closing of the two table top sections and there will be a properbalancing of the top on the platform at all times.

The arms ll and t2 when not extended to support the drop leaves it and3'! lie parallel to the sides of the apron sections Mi and 48a as shownin Figures 1 and 2. Sufficient space is provided between the leaves itand 31 when hanging downwardly from the sections 33 and M, and the apronto receive the arms. The manner of slidably keying the slides togetheras shown in Figure 6 is of standard practice and therefore needs nodetailed description. The keys the connecting the slides together are inthe form of double dovetails. Two keys are used to connect adjacentslides, one key being secured to each slide. The keys will thereforeas!) as stops when the slides are fully extended and will permit theslides to open only to the desired extent.

In the drawings I have shown the top of the turn table lying flush withthe top of the platform base. It is possible to position the top surfaceof the turn table above or below the top of the platform. The novelfeature of the invention is to cause one or more keys affixed to theundersurface of the slides to enter one or more grooves in the platformwhen the slides and turn table against rotation. The platform couldcarry ridges receivable in grooves in the slides if desired. Although Ihave shown a turn table in the form of a disc, any means for rotatablysecuring the slides to the platform willconstitute a turn table in thebroad sense.

The keys on certain slides not only pass into grooves in the platformwhen the slides are extended or when they are closed, but the keys aredove-tail in shape and will secure the slides to the platform. In thisway, the table top, slides, turn table and platform are locked togetherinto one immovable unit when the table top is closed or opened and thiswill permit the table to be handled and transported as a single unitwithout the risk of breakage of the assembled parts or without thechance of these parts becoming displaced. It is obvious that a T-shapedkey or other type of locking the slides to the turn table and platformmay be used.

While I have shown only the preferred form of my invention, it should beunderstood that various changes or modifications may be made withinthe'scope of the appended claims without departi the platform, slidescarried by the turn table, certain of said slides having keys on theirundersurfaces, said turn table having keyways for slidably receiving thekeys, said platform having keyways extending in the direction of thelength of the platform and aligned with the turn table keyways when theturn table is rotated into a predetermined position, whereby the slidesmay be extended when parallel with the elongated sides thereof, andtable top sections carried by the slides, the slides connecting thesections together.

2. An extension table comprising an elongated platform, a turn tablecarried thereby and having pairs of keyways, slides carried by the turntable, certain of said slides having keys slidable in the keyways, saidplatform having key receiving recesses extending at right angles to thelength thereof and key receiving keyways extending parallel with thelength thereof, two table top sections carried by the slides anddesignedto abut each other when the table top is closed and the sectionsextend parallel with the length of the platform, said keys entering therecesses when the sections are closed whereby the sections, slides andturn table are locked against rotation, said keys also being receivablein the platform keyways when the keys are retracted from the recessesand the turn table is rotated to align the keys with the platformkeyways, said slides being extensible to separate the sections and thekeys sliding in the platform keyways and locking the turn table fromrotating.

3. In an extension table, a platform, extensible interconnected slidesrotatably carried by the platform, at least one of said slides carryinga key, said platform having a keyway for receiving the key when theslides are extended, whereby the slides will be locked against rotationon the platform when the slidesare extended.

l. An extension table comprising an elongated platform, slides rotatablycarried thereby, at least one of said slides having a key, said platformhaving a key-receiving recess extending at right angles to the lengththereof and a keyway extending parallel with the length thereof, tabletop sections carried by the slides, said key being received in saidrecess when the table top sections abut each other, and being receivedin the keyway when the slides are extended, whereby the slides and tabletop sections will be held against rotation on the platform when theslides are extended and when the slides are closed.

5. In a device of the type described, a platform, extensibleinterconnected slides rotatably carried thereby, table top sectionscarried by the slides, said slides and table top sections rotating as aunit on the platform, and means forlimiting the rotation of the slidesto an arc of 90.

6. In an extensible table, a platform, extensible slides rotatablycarried by the platform, cooperating means carried by the slides andplatform for locking the slides against rotation on the platform whenthe slides are extended, and table top sections carried by the slidesand being interconnected therewith, the locking of the slides to theplatform making a unitary structure of the sections, slides andplatform.

7. An extension table comprising an elongated platform, a turntablecarried thereby and having keyways therein, two groups of slides eachhaving their center slides secured to the turntable, certain of saidslides having keys slidable in the keyways, tabletop sections supportedby the slides and being movable from closed to open position, saidsections lying parallel with the length of the platform when the tabletop is closed, said table top sections, slides and turntable beingswingable through 90 to dispose the slides parallel with the length ofthe platform, said platform having keyways therein aligned with theturntable keyways when the turntable is in a proper position forextending the slides, said platform keyways receiving the slide keyswhen the slides are extended, whereby the turntable, slides and tabletop sections are held against rotational movement with respect to theplatform and are also secured against being lifted from the platformwhen the table is raised by the top sections.

8. In an extension table, a platform, a turntable rotatably carriedthereby, slides carried by the turntable, said platform and slideshaving cooperating means for slidably securing certain of said slides tothe platform when the turntable is in one position and the slides areclosed and when the turntable is in another position and the slides areopened, said means securing the platform, turntable, and slides togetheras a unitary structure when the parts are in either of 511856 twopositions, the turntable and slides also being held against rotativemovement.

9. A table of the character described including an elongated horizontalplatform mounted on a vertical support, a turntable secured to saidplatform and being swingable through an arc of 90, slides carried by theturntable, and separable table top sections secured to certain of theslides,

the slides being slidably secured to the platform when the table topsections are closed or opened in such a manner that when the table topsections are separated from each other, they will still be supported byand connected to the platform by the slides.

10. An extensible drop leaf table including two groups of leaves, eachgroup comprising a main leaf and a drop leaf, the main leaves meeting ata center line of the table, a platform underlying the centers of saidmain leaves, a turntable rotatably mounted on the platform and having afree rotating movement of 90, slides secured to the turntable and to themain leaves, whereby the leaves may be turned from a lengthwise positionon the platform to a transverse position, and cooperating means betweenthe slides and the platform for slidably securing the slides to theplatform when the leaves are separated at their center line, said meansalso preventing rotation between the slides and the platform when theslides extend beyond the turntable.

11. An extension table comprising an elongated platform, a turntablecarried thereby and limited to a rotative movement of'90", table slidessecured to the turntable and carrying equalizing means for causing theslides to uniformly open and close, table top sections secured to theend slides and lying parallel with the length of the platform when thetable is closed, cooperating locking means carried by the slides andplatform for preventing rotation of the turntable, slides and table topsections when the table is closed, and for securing the slides againstvertical movement with respect to the platform, means cooperating with apart of the locking means, whereupon the turntable, slides and table topsections may be rotated as a unit through 90 to position the slidesparallel with the length of the platform, said cooperating locking meansnow permitting the table top sections to be opened to any desired extentup to the limit of opening movement, said cooperating locking means nowpreventing rotation of the turntable, slides and table top sections withrespect to the platform and securing the slides against verticalmovement with respect to the platform.

12. An extension table comprising an, elongated platform, a turntablerotatably carried thereby, slides carried by the turntable and revolvingtherewith, means interconnecting the slide and turntable againstrelative circumferential movement, said turntable being adapted to swingwith the slides either into a transverse position of the slides inrespect to the platform when the table is closed, or into parallelismwith the length of the platform when the table is open, and table topsections extending transversely to and being carried by the slides.

WILLIAM M. HYLAND.

